无线随钻测量系统的数据报协议

Datagram protocol of wireless MWD system

为了满足无线随钻测量对高传输速率的迫切需要,避免采用现有固定结构的数据报,通过分析井下参数的特点,提出了一种适用于无线随钻测量系统的通用、高效、灵活、可扩展的数据报协议。针对系统传输效率提出的增量传输技术避免了冗余数据,缩短了数据报长度。设计的数字排列数据域定界方法是对传统数据报定界的改进,能够根据参数的实际取值来动态调整相应的数据域大小,有效地利用了数据报空间。数据报编号方法能够根据需要自行定制数据报格式,提高了系统的灵活性,并使系统具有可扩展性,能够满足随钻测量系统测量更多参数的需要。

In order to meet the urgent need for high transmission rates of wireless MWD and to avoid the use of currently fixed-structured datagram protocol,the paper analyzed the characteristics of downhole parameters and put forward a general,efficient,flexible and scalable datagram protocol which is suitable for wireless MWD system.The proposed incremental transmission technology can avoid redundancy,shorten the length of the datagram and improve the transmission efficiency of the system.The designed datagram field delimiting method is an improvement to the traditional delimiting method of datagram,which can adjust the size of the corresponding data fields according to the actual values of parameters,so the space of datagram is used effectively.The designed numbering method for datagram can customize the datagram itself according to the requirements,improve the flexibility of the system,make the system more scalable and meet the more measuring parameters needs of MWD systems.